21071595

素因数分解:

$3^1\times 5^1\times {\mathrm{997}}^1\times {\mathrm{1409}}^1$

素因数の和:2414

約数の個数: 16

約数和(自身を含む): 33772320

約数和(自身を除く): 12700725

約数列:

[1, 3, 5, 15, 997, 1409, 2991, 4227, 4985, 7045, 14955, 21135, 1404773, 4214319, 7023865, 21071595]

約数ペア:

[(1, 21071595), (3, 7023865), (5, 4214319), (15, 1404773), (997, 21135), (1409, 14955), (2991, 7045), (4227, 4985)]